S
M
T
W
T
F
S
30
81°
63°
31
82°
63°
1
81°
62°
2
84°
62°
3
85°
54°
4
80°
54°
5
77°
61°
6
80°
61°
7
82°
56°
8
77°
54°
9
76°
59°
10
77°
60°
11
83°
59°
12
83°
60°
13
82°
60°
14
83°
59°
15
82°
58°
16
78°
57°
17
77°
50°
18
74°
50°
19
73°
47°
20
72°
47°
21
71°
48°
22
71°
53°
23
72°
48°
24
77°
52°
25
76°
55°
26
76°
54°
27
78°
55°
28
78°
52°
29
77°
51°
30
75°
49°
1
73°
50°
2
76°
51°
3
76°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kentucky
Kentucky's September 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 47° and 63°. The average high for September is 78° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Kentucky. See also: October | November | December.